Conversion Error From String Null
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Conversion Error From String Firebird Date
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takes a minute: Sign up Interbase: conversion error from string “” up vote 1 down vote favorite I'm running IB2009 and I'm trying to count the number of records where a specific field is neither NULL nor empty: SELECT COUNT(A.ID) FROM
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MYVIEW A WHERE ((A.VARCHARFIELD1 IS NOT NULL) OR (A.VARCHARFIELD1 <> '')) where MYVIEW is a VIEW, and MYVIEW.ID is an INTEGER, while MYVIEW.VARCHARFIELD1 is a VARCHAR(18). I'm getting the error message Error at line 1, conversion error from string "" which I don't really understand, since when I drop the COUNT()-function, the query executes nicely. Do anyone know what I'm doing wrong? Thanks! sql interbase share|improve this question edited Jan 15 '10 at 11:49 asked Jan 15 '10 at 10:22 conciliator sql isnull 3,26832656 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote I don't see anything wrong with using COUNT() in this case. Although it shouldn't matter you might try dropping all the parentheses in your WHERE clause. You also might try using COUNT(*) instead of COUNT(A.ID) just to see if it gives you different results. In any case, based on your description of the intent of the query I don't think that the query is going to do what you intended. If the query is supposed to return rows where the field is neither NULL nor empty I believe your WHERE clause should be WHERE A.VARCHARFIELD1 IS NOT NULL AND A.VARCHARFIELD1 <> '' With the 'OR' in there as originally written I think you'll get back every row in the table where A.VARCHARFIELD1 is NOT NULL, as the "field NOT NULL" predicate will allow in all non-NULL values, and since the two predicates are joined by an OR the second predicate won't matter. I hope this helps. share|improve this answer answered Jan 15 '10 at 12:11 Bob Jarvis 24.4k43766 Bob: well, I actually tried COUNT(*), but to no avail. You're quite correct regarding the 'AND'/'OR' though - there should definitely be an 'AND' there in stead. Thanks! (+1) I believe this to be a bug with the way IB handles VIEWs... It works as a charm when executed against a table with identical fields. &ndash
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to handle date conversion error in SQL? up vote 8 down vote favorite So http://stackoverflow.com/questions/2070789/interbase-conversion-error-from-string I'm trying to convert strings in an SQL databse into datetime values. I have some dates in a table like this: 23/12/2013 16:34:32 24/12/2013 07:53:44 24/12/2013 09:59:57 24/12/2013 12:57:14 24/12/2013 12:48:49 24/12/2013 13:04:17 24/12/2013 13:15:47 24/12/2013 13:21:02 24/12/2013 14:01:28 24/12/2013 14:02:22 24/12/2013 14:02:51 They are stored as strings unfortunately And I want to convert them to datetime SELECT CONVERT(datetime, analysed, 103 ) FROM OIL_SAMPLE_UPLOAD However I get this message when http://stackoverflow.com/questions/21422029/how-to-handle-date-conversion-error-in-sql I run the query The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. Presumably because some values are badly formed (although I am yet to spot any of these) It's ok if some values don't convert, I just need a way of handling this situation. Something like ISNULL(CONVERT(datetime, analysed, 103 )) would be good except that the convert function does not return NULL when it fails. sql string tsql error-handling type-conversion share|improve this question asked Jan 29 '14 at 4:20 sav 7691922 to be clear the strings are in dd/MM/yyyy hh:mm:ss format –sav Jan 29 '14 at 4:31 add a comment| 3 Answers 3 active oldest votes up vote 10 down vote accepted For SQL Server you can use ISDATE() function to check whether value is valid date SELECT CASE WHEN ISDATE(analysed)=1 THEN CONVERT(datetime, analysed, 103 ) ELSE '' END FROM OIL_SAMPLE_UPLOAD share|improve this answer answered Jan 29 '14 at 4:25 mhasan 14.6k54384 1 I'd prefer not to make any changes to the database I'm using. ie: I'd prefer to to change SET DATEFORMAT dmy; unless the change only exists for the duration of the query. –sav Jan 29 '14 at 4:35 This doesnot do any cha
the XWork 2 conversion error interceptor. From https://struts.apache.org/docs/conversion-error-interceptor.html the Javadocs of the XWork 2 interceptor: ConversionErrorInterceptor https://struts.apache.org/docs/type-conversion.html adds conversion errors from the ActionContext to the Action's field errors. This interceptor adds any error found in the ActionContext's conversionErrors map as a field error (provided that the action implements conversion error ValidationAware). In addition, any field that contains a validation error has its original value saved such that any subsequent requests for that value return the original value rather than the value in the action. This is important because if conversion error from the value "abc" is submitted and can't be converted to an int, we want to display the original string ("abc") again rather than the int value (likely 0, which would make very little sense to the user). From the Javadocs of the Struts 2 interceptor: This interceptor extends ConversionErrorInterceptor but only adds conversion errors from the ActionContext to the field errors of the action if the field value is not null, "", or {""} (a size 1 String array with only an empty String). See ConversionErrorInterceptor for more information, as well as the Type Conversion documentation. Parameters None Extending the Interceptor There are no known extension points for this interceptor. Examples Generated by CXF SiteExporter
HTML inputs have names that can be used in OGNL expressions. (HTML inputs are form elements and other GET/POST parameters.) 1 Built in Type Conversion Support2 Relationship to Parameter Names3 Creating a Type Converter4 Applying a Type Converter to an Action5 Applying a Type Converter to a bean or model6 Applying a Type Converter for an application7 A Simple Example8 Advanced Type Conversion 8.1 Null Property Handling8.2 Collection and Map Support 8.2.1 Indexing a collection by a property of that collection 9 An advanced example for indexed Lists and Maps10 Type Conversion Error Handling11 Common Problems 11.1 Null and Blank Values11.2 Interfaces11.3 Generics and Erasure 12 Next: Interceptors Built in Type Conversion Support Type Conversion is implemented by XWork. XWork will automatically handle the most common type conversion for you. This includes support for converting to and from Strings for each of the following: Stringboolean / Booleanchar / Characterint / Integer, float / Float, long / Long, double / Doubledates - uses the SHORT format for the Locale associated with the current requestarrays - assuming the individual strings can be coverted to the individual itemscollections - if not object type can be determined, it is assumed to be a String and a new ArrayList is created Note that with arrays the type conversion will defer to the type of the array elements and try to convert each item individually. As with any other type conversion, if the conversion can't be performed the standard type conversion error reporting is used to indicate a problem occurred while processing the type conversion. EnumerationsBigDecimal and BigInteger Relationship to Parameter Names There is no need to capture form values using intermediate Strings and primitives. Instead, the framework can read from and write to properties of objects addressed via OGNL expressions and perform the appropriate type conversion for you. Here are some tips for leveraging the framework's type conversion capabilities: Use OGNL expressions - the framework will automatically take care of creating the actual objects for you.Use JavaBeans! The framework can only create objects that obey the JavaBean specification, provide no-arg constructions and include getters and setters where appropriate.Remember that person.name will call getPerson().setName(). If the framework creates the Person object for you, it remember that a setPerson